:root {
  --navy: #0b1f33;
  --navy-2: #12304d;
  --blue: #1a6fb5;
  --accent: #2f9e44;
  --accent-dark: #237a34;
  --green-light: #d9f0df;
  --ink: #1e2a36;
  --muted: #5c6b7a;
  --line: #dfe6ec;
  --bg-soft: #f3f7fa;
  --white: #ffffff;
  --radius: 12px;
  --shadow-sm: 0 2px 8px rgba(11, 31, 51, 0.06);
  --shadow-md: 0 10px 28px rgba(11, 31, 51, 0.12);
  --shadow-lg: 0 24px 50px rgba(11, 31, 51, 0.18);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  color: var(--accent-dark);
}

p {
  margin: 0 0 1rem;
}

h1,
h2,
h3,
h4 {
  line-height: 1.2;
  color: var(--navy);
  margin: 0 0 0.8rem;
  font-weight: 800;
}

h1 {
  font-size: clamp(1.9rem, 4vw, 3rem);
}

h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.1rem);
}

h3 {
  font-size: 1.15rem;
}

.container {
  width: min(1200px, 100% - 2.4rem);
  margin-inline: auto;
}

.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 0.86rem;
}

.center {
  text-align: center;
  margin-top: 2.4rem;
}

.section {
  padding: 5rem 0;
}

.section-tint {
  background: var(--bg-soft);
}

.section-head {
  max-width: 760px;
  margin: 0 auto 2.6rem;
  text-align: center;
}

.section-head p:not(.eyebrow) {
  color: var(--muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.8rem 1.6rem;
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.2;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease,
    color 0.15s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.55rem 1.15rem;
  font-size: 0.88rem;
}

.btn-block {
  width: 100%;
}

.btn-accent {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 8px 20px rgba(47, 158, 68, 0.28);
}

.btn-accent:hover {
  background: var(--accent-dark);
  color: var(--white);
}

.btn-primary {
  background: var(--navy);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--navy-2);
  color: var(--white);
}

.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.7);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--white);
}

.btn-light {
  background: var(--white);
  color: var(--navy);
}

.btn-light:hover {
  background: #e6f2ff;
  color: var(--navy);
}

.btn-outline-light {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}

.text-link {
  font-weight: 700;
  color: var(--accent-dark);
  display: inline-flex;
  gap: 0.3rem;
  align-items: center;
}

/* ---------- header ---------- */
.topbar {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.82rem;
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.4rem 0;
}

.topbar a {
  color: #cfe3ff;
  margin-left: 1rem;
}

.topbar-right {
  white-space: nowrap;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.4rem;
  min-height: 76px;
  padding: 0.7rem 0;
}

.brand img {
  height: 44px;
  width: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.nav-link {
  padding: 0.65rem 0.9rem;
  color: var(--navy);
  font-weight: 600;
  border-radius: 999px;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--accent-dark);
  background: var(--green-light);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown .nav-link {
  background: transparent;
  border: 0;
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
}

.dropdown-panel {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 0.6rem;
  min-width: 280px;
  display: none;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.nav-dropdown:hover .dropdown-panel,
.nav-dropdown:focus-within .dropdown-panel {
  display: block;
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: block;
  padding: 0.55rem 0.9rem;
  color: var(--ink);
  border-radius: 8px;
  font-size: 0.92rem;
}

.dropdown-item:hover {
  background: var(--bg-soft);
  color: var(--accent-dark);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  width: 42px;
  height: 42px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
}

.hero-slides {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  animation: heroFade 20s infinite;
}

.hero-slide:nth-child(1) {
  animation-delay: 0s;
}

.hero-slide:nth-child(2) {
  animation-delay: 4s;
}

.hero-slide:nth-child(3) {
  animation-delay: 8s;
}

.hero-slide:nth-child(4) {
  animation-delay: 12s;
}

.hero-slide:nth-child(5) {
  animation-delay: 16s;
}

@keyframes heroFade {
  0%,
  18% {
    opacity: 1;
  }
  22%,
  100% {
    opacity: 0;
  }
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(7, 20, 34, 0.88) 0%,
    rgba(7, 20, 34, 0.65) 48%,
    rgba(7, 20, 34, 0.25) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin-left: max(1.2rem, calc((100vw - 1200px) / 2));
  padding: 3rem 0 4rem;
}

.hero-eyebrow {
  color: #b7f0c2;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.86rem;
}

.hero h1 {
  color: var(--white);
  font-size: clamp(2rem, 4.6vw, 3.5rem);
  margin-bottom: 1rem;
}

.hero-sub {
  font-size: 1.15rem;
  max-width: 590px;
  color: rgba(255, 255, 255, 0.92);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.6rem;
}

/* ---------- stats ---------- */
.stats-band {
  background: var(--navy);
  padding: 2.4rem 0;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  text-align: center;
}

.stat strong {
  display: block;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  color: var(--white);
  font-weight: 800;
}

.stat span {
  color: #9db8cf;
  font-size: 0.88rem;
}

/* ---------- value / feature cards ---------- */
.values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}

.value-card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.8rem;
}

.value-card h3::before {
  content: "✓";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-right: 0.55rem;
  border-radius: 50%;
  background: var(--green-light);
  color: var(--accent-dark);
  font-size: 0.9rem;
}

/* ---------- category cards ---------- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.4rem;
}

.category-card {
  display: flex;
  flex-direction: column;
  color: inherit;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  color: inherit;
}

.category-card-media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--bg-soft);
}

.category-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.category-card:hover .category-card-media img {
  transform: scale(1.05);
}

.category-card-body {
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.category-card-body strong {
  font-size: 1.05rem;
  color: var(--navy);
}

.category-card-body small {
  color: var(--muted);
  line-height: 1.5;
}

.category-card-body .text-link {
  margin-top: auto;
}

/* ---------- product grid & cards ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.product-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.product-card-media {
  aspect-ratio: 1 / 1;
  background: var(--bg-soft);
  overflow: hidden;
}

.product-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.product-card:hover .product-card-media img {
  transform: scale(1.04);
}

.product-card-body {
  padding: 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  flex: 1;
}

.product-card-body .eyebrow {
  font-size: 0.7rem;
  margin: 0;
}

.product-card-body h3 {
  font-size: 1.08rem;
  margin: 0;
}

.product-card-body h3 a {
  color: var(--navy);
}

.product-card-body h3 a:hover {
  color: var(--accent-dark);
}

.card-spec {
  color: var(--muted);
  font-size: 0.86rem;
  margin: 0;
}

.product-card-body .text-link {
  margin-top: auto;
  font-size: 0.9rem;
}

/* ---------- page hero / breadcrumbs ---------- */
.page-hero {
  background:
    linear-gradient(rgba(9, 24, 40, 0.82), rgba(9, 24, 40, 0.82)),
    radial-gradient(circle at 80% 20%, #123a5f, #0b1f33);
  color: var(--white);
  padding: 4.6rem 0 3.8rem;
}

.page-hero h1 {
  color: var(--white);
  margin-top: 0.8rem;
}

.page-hero p:not(.eyebrow),
.page-hero time {
  color: rgba(255, 255, 255, 0.86);
  max-width: 820px;
}

.page-hero-compact {
  padding: 2.6rem 0 2.2rem;
}

.breadcrumbs {
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 0.8rem;
}

.breadcrumbs a {
  color: #b9d8ff;
}

.crumb-sep {
  margin: 0 0.5rem;
  opacity: 0.5;
}

/* ---------- about ---------- */
.about-section {
  border-bottom: 1px solid var(--line);
}

.about-section p:not(.eyebrow) {
  max-width: 860px;
}

.about-figure {
  margin: 1.6rem 0;
  border-radius: var(--radius);
  overflow: hidden;
  max-height: 480px;
}

.about-figure img {
  width: 100%;
  object-fit: cover;
}

.gallery-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  margin-top: 1.6rem;
}

.gallery-strip img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 1rem;
  margin-top: 1.6rem;
}

.cert-grid img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.6rem;
  background: var(--white);
}

/* ---------- split (home about teaser) ---------- */
.split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 3rem;
  align-items: center;
}

.split-media {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-teaser {
  background: var(--bg-soft);
}

/* ---------- product detail ---------- */
.product-detail .overview-info .eyebrow {
  margin-bottom: 0.3rem;
}

.lead-meta {
  margin-top: 0.2rem;
}

.lead-meta a {
  color: #bfe0ff;
}

.product-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.8rem;
  align-items: start;
}

.product-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
}

.gallery-main {
  grid-column: 1 / -1;
  aspect-ratio: 1 / 1;
}

.gallery-item {
  aspect-ratio: 1 / 1;
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-soft);
  border: 1px solid var(--line);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.gallery-item:hover img {
  transform: scale(1.04);
}

.product-cover {
  border-radius: var(--radius);
}

.summary-specs {
  margin: 1.4rem 0;
  border-top: 1px solid var(--line);
}

.spec-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.62rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}

.spec-row dt {
  color: var(--muted);
  font-weight: 600;
  min-width: 40%;
}

.spec-row dd {
  margin: 0;
  text-align: right;
}

.spec-row.wide span {
  color: var(--ink);
}

.overview-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.6rem;
}

.features-section,
.specifications-section,
.related-section,
.enquiry-note {
  margin-top: 4rem;
}

.feature-block {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.2rem;
  align-items: center;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem;
  margin-bottom: 1rem;
}

.feature-media img {
  border-radius: 8px;
  max-height: 180px;
  width: 100%;
  object-fit: cover;
}

.feature-media img.secondary {
  display: none;
}

.feature-text p {
  margin: 0;
  font-size: 0.95rem;
}

.video-embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  margin-bottom: 1.4rem;
  border-radius: var(--radius);
  overflow: hidden;
}

.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.8rem;
  margin-bottom: 1.2rem;
}

.image-grid figure {
  margin: 0;
}

.image-grid img {
  border-radius: 8px;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.image-grid figcaption {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.3rem;
}

.spec-table-wrap {
  margin-bottom: 2.2rem;
}

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 640px;
}

.spec-table th,
.spec-table td {
  padding: 0.65rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.spec-table thead th {
  background: var(--navy);
  color: var(--white);
  font-weight: 700;
}

.spec-table tbody th {
  background: var(--bg-soft);
  width: 230px;
  font-weight: 600;
}

.spec-table tr:last-child td,
.spec-table tr:last-child th {
  border-bottom: 0;
}

.enquiry-note {
  background: linear-gradient(120deg, var(--navy), var(--navy-2));
  color: var(--white);
  border-radius: var(--radius);
  padding: 2.4rem;
  text-align: center;
}

.enquiry-note h2 {
  color: var(--white);
}

.enquiry-note p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 640px;
  margin: 0 auto 1.3rem;
}

/* ---------- blog ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.blog-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.blog-card > a:first-child {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-soft);
}

.blog-card > a:first-child img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-card-body {
  padding: 1.3rem;
  flex: 1;
}

.blog-card-body time {
  color: var(--accent-dark);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.blog-card-body h3 {
  font-size: 1.05rem;
  margin: 0.4rem 0;
}

.blog-card-body h3 a {
  color: var(--navy);
}

.blog-card-body p {
  color: var(--muted);
  font-size: 0.9rem;
}

.article-body {
  max-width: 860px;
  padding: 3rem 1.2rem 2rem;
  overflow-wrap: anywhere;
}

.article-body h1,
.article-body h2,
.article-body h3 {
  margin-top: 2rem;
}

.article-body img {
  border-radius: var(--radius);
  margin: 1.4rem auto;
  box-shadow: var(--shadow-sm);
}

.article-body table {
  border-collapse: collapse;
  width: 100%;
  overflow-x: auto;
  display: block;
}

.article-body th,
.article-body td {
  border: 1px solid var(--line);
  padding: 0.5rem 0.7rem;
}

.article-nav {
  padding: 1rem 0 4rem;
}

/* ---------- contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 2rem;
  align-items: start;
}

.contact-grid > *,
.cta-grid > *,
.split > *,
.product-overview > *,
.category-grid > * {
  min-width: 0;
}

.contact-form-card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem;
}

.contact-form {
  display: grid;
  gap: 1rem;
  margin-top: 1.2rem;
}

.contact-form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--navy);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  font: inherit;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.72rem 0.85rem;
  background: var(--white);
}

.contact-form textarea {
  resize: vertical;
}

.contact-info {
  display: grid;
  gap: 1.1rem;
}

.contact-info h2 {
  font-size: 1.2rem;
  margin-top: 0.6rem;
}

.office-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
  box-shadow: var(--shadow-sm);
}

.office-card h3 {
  font-size: 1rem;
}

.office-card address {
  font-style: normal;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.7rem;
}

.office-card p {
  font-size: 0.88rem;
  margin-bottom: 0.25rem;
}

.contact-info ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

/* ---------- CTA band ---------- */
.cta-band {
  background:
    linear-gradient(120deg, rgba(9, 27, 45, 0.88), rgba(18, 48, 77, 0.9)),
    var(--navy);
  color: var(--white);
  padding: 4rem 0;
}

.cta-band h2 {
  color: var(--white);
}

.cta-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
  align-items: center;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  justify-content: flex-end;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
}

.chip-list a {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 999px;
  padding: 0.5rem 1rem;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--navy);
}

.chip-list a:hover {
  background: var(--navy);
  color: var(--white);
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--navy);
  color: #b6c7d8;
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 0.8fr 1.2fr;
  gap: 2.4rem;
  padding: 3.6rem 0 2.4rem;
}

.site-footer h4 {
  color: var(--white);
  margin-bottom: 0.9rem;
  font-size: 1rem;
}

.site-footer a {
  color: #c3d7ea;
  display: block;
  padding: 0.2rem 0;
}

.site-footer a:hover {
  color: #9ee6b0;
}

.footer-brand img {
  background: var(--white);
  border-radius: 8px;
  padding: 0.35rem 0.55rem;
  margin-bottom: 1rem;
}

.site-footer address {
  font-style: normal;
  margin-bottom: 0.7rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 1.1rem 0;
  font-size: 0.82rem;
  color: #7f98af;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.8rem;
  margin-top: 0.5rem;
}

.social-links a {
  display: inline;
  padding: 0;
  font-size: 0.86rem;
}

.whatsapp-float {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: 70;
  background: #25d366;
  color: #fff;
  font-weight: 800;
  border-radius: 999px;
  padding: 0.8rem 1.2rem;
  box-shadow: 0 10px 26px rgba(37, 211, 102, 0.42);
}

.whatsapp-float:hover {
  background: #1db457;
  color: #fff;
}

/* ---------- responsive ---------- */
@media (max-width: 1020px) {
  .main-nav {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(360px, 86vw);
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 5rem 1.2rem 2rem;
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform 0.25s ease;
    overflow-y: auto;
  }

  .main-nav.is-open {
    transform: translateX(0);
  }

  .nav-link {
    display: block;
    border-radius: 8px;
    padding: 0.8rem 0.9rem;
  }

  .nav-dropdown .dropdown-panel {
    position: static;
    display: block;
    opacity: 1;
    transform: none;
    box-shadow: none;
    border-left: 3px solid var(--green-light);
    margin: 0.3rem 0 0.6rem;
    padding: 0;
    min-width: 0;
  }

  .dropdown-toggle {
    cursor: default;
  }

  .nav-toggle {
    display: flex;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .product-overview {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .contact-grid,
  .cta-grid,
  .split {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .topbar-left {
    display: none;
  }

  .topbar-inner {
    justify-content: flex-end;
  }

  .header-main .btn-accent {
    display: none;
  }

  .brand img {
    height: 36px;
  }

  .hero {
    min-height: 560px;
  }

  .stats {
    grid-template-columns: 1fr 1fr;
  }

  .values {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 3.4rem 0;
  }

  .feature-block {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.8rem;
  }

  .contact-form-card {
    padding: 1.3rem;
  }

  .hero-content {
    padding-inline: 0;
  }
}

@media (max-width: 520px) {
  .product-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .category-grid {
    grid-template-columns: 1fr;
  }

  .topbar a {
    font-size: 0.72rem;
  }

  .product-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001s !important;
    transition-duration: 0.001s !important;
  }
}